package com.netcai.buyer.utils;

import javax.servlet.http.HttpServletRequest;

/**
 * IP工具类
 * @author administrator
 */
public class IpUtils {

	// 返回用IP地址  
    public static String getIpAddr(HttpServletRequest request) {  
        String ip = request.getHeader("X-Forwarded-For");  
        if (ip == null || ip.length() == 0 || " unknown ".equalsIgnoreCase(ip)) {  
            ip = request.getHeader("X-Real-IP");  
        }  
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
            ip = request.getHeader("Proxy-Client-IP"); 
        } 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
        	ip = request.getHeader("WL-Proxy-Client-IP"); 
        } 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
        	ip = request.getHeader("HTTP_CLIENT_IP"); 
        } 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
        	ip = request.getHeader("HTTP_X_FORWARDED_FOR"); 
        } 
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
    	    ip = request.getRemoteAddr(); 
        } 
        return ip;  
    }  
}